Coil



FIG. 1 is a perspective view of a coil showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a back elevation view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken lines shown in the drawings represent unclaimed portions of the coil and form no part of the claimed design. 

CLAIM The ornamental design for a coil, as shown and described. 